diff --git a/src/DbExtractor.php b/src/DbExtractor.php
index 3bad717..030f971 100644
--- a/src/DbExtractor.php
+++ b/src/DbExtractor.php
@@ -71,7 +71,7 @@ public function extract(false|string $incremental = false): Generator
         $hashedQuery = $this->createHashedQuery();
         $lastId = null;
 
-        if ($incremental) {
+        if (! empty($incremental)) {
             $hashedQuery->where($this->updateColumn, '>=', $incremental);
         }